PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-22:28:00
G01     38.4           12.1                9.6 +/-    3.91      25.4 +/-    3.91  0.040 / 0.030
G02     199.2          13.2               14.2 +/-    5.18      36.8 +/-    5.18  0.040 / 0.020
G06     176.2          41.8               15.7 +/-    1.57      22.2 +/-    1.57  0.120 / 0.150
G13     232.6          18.9               14.1 +/-    3.24      31.8 +/-    3.24  0.090 / 0.170
G17     12.9           65.8               11.7 +/-    1.10      12.7 +/-    1.10  0.040 / 0.060
G19     293.3          71.1               11.9 +/-    0.39      12.5 +/-    0.39  0.040 / 0.050
G24     313.9          24.5               10.3 +/-    1.68      20.5 +/-    1.68  0.340 / 0.320
G28     74.2           47.5               12.4 +/-    0.94      16.1 +/-    0.94  0.100 / 0.340
G30     155.4          21.3               14.0 +/-    1.45      29.8 +/-    1.45  0.100 / 0.190